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Isabella Bank Corporation and Grand River Bank disclosed a pending merger under which Grand River will become part of Isabella Bank, with the combined organization to operate under the Isabella Bank name after closing. The communication describes expected benefits such as expanded digital services, higher commercial lending limits, and access to Isabella’s Wealth Management team ($800 million AUM) and $2.2 billion in assets across 31 locations. The transaction is expected to close in the fourth quarter of 2026, subject to regulatory and shareholder approvals, with a systems conversion currently anticipated in December 2026.
The message states there are no immediate changes to customer accounts or employee benefits while integration planning and employment determinations continue. The communication includes standard forward-looking statement language and confirms Isabella will file a registration statement on Form S-4 and a proxy statement/prospectus with the SEC.
Isabella Bank Corporation agreed to acquire Grand River Commerce, Inc., with Grand River Bank to be merged into Isabella Bank. The transaction is expected to close in the fourth quarter of 2026 and the combined institution will operate under the Isabella Bank name.
Customers should expect business as usual until closing; Grand River customers will convert to Isabella Bank systems with a planned system conversion in December 2026. The combined organization will include 33 locations across nine counties in Michigan and the banks say customers will gain access to additional branches, ATMs, and Isabella’s digital banking tools.
Isabella Bank Corporation and Grand River Commerce, Inc. agreed to merge after Isabella, 401 Merger Sub, Inc. and Grand River executed an Agreement and Plan of Merger on June 11, 2026. A joint press release was issued and an investor presentation was furnished on June 12, 2026.
The filing states that Isabella will file a registration statement on Form S-4 containing a proxy statement/prospectus for Grand River shareholders and that the transaction is subject to customary closing conditions, shareholder approvals and regulatory approvals.
Isabella Bank Corporation is acquiring Grand River Commerce, Inc. in a cash and stock merger valued at approximately $54.6 million. The deal expands Isabella into the Grand Rapids, Michigan market, creating a pro forma bank with about $2.8 billion in assets and 33 locations across nine counties.
Grand River reported roughly $511.7 million in assets, $437.9 million in loans and $438.9 million in deposits as of March 31, 2026. Based on assumed Grand River shares, shareholders can elect about $5.72 in cash or 0.1415 Isabella shares per share, subject to proration so that 65% of shares receive stock and 35% cash.
Isabella projects cost savings equal to 35% of Grand River’s expense base and estimates earnings per share accretion of about 10.4% in 2027 and 11.0% in 2028, with tangible book value dilution of 4.0% and an earnback period of 1.75 years using the crossover method. Closing is targeted for the fourth quarter of 2026, subject to regulatory and Grand River shareholder approvals.
McDonnell Neil Michael reported acquisition or exercise transactions in this Form 4 filing.
ISABELLA BANK CORP President and director Neil Michael McDonnell reported routine equity activity. He received a grant or award of 3 shares of common stock at $41.49 per share, increasing his direct holdings to 12,202.1715 shares. The filing also shows 42 shares of common stock held indirectly by an immediate family member.
ISABELLA BANK CORP director Jeffrey J. Barnes received a grant of 225 shares of common stock at a value of $41.49 per share. This compensation-related award increased his direct holdings to 42,527.2397 shares, representing a routine, non-market acquisition rather than an open-market purchase.
Schwind Jerome E reported acquisition or exercise transactions in this Form 4 filing.
ISABELLA BANK CORP President & CEO Jerome E. Schwind received a grant of 113 shares of common stock on June 1, 2026 at $41.49 per share. After this compensation-related award, he directly holds 37,629.0326 common shares.
Opperman Sarah R reported acquisition or exercise transactions in this Form 4 filing.
Isabella Bank Corp director Sarah R. Opperman received a stock award of 43 common shares on June 1, 2026, at $41.49 per share. This grant is compensation-related rather than an open-market purchase and increases her direct holdings to 24,514.4997 common shares.